A cement-treated base (CTB) or subbase (CTS) is a type of pavement layer made up of a mixture of CC100 (admixture), cement, water, soil and aggregate materials that are compacted and cured to create a strong and durable layer for roadways or other transportation infrastructure.
The use of CC100 along with cement as a stabilizing agent for subgrade soil, base or subbase materials is a technique used in the construction of roads, airfields, and other infrastructure projects like warehouse, airport hangar. CTBs/CTSs provide several advantages over untreated materials such as higher strength, better stability, increased resistance to water and weather, and better overall performance.
The CTB/CTS layer is typically constructed in several steps, starting with the excavation of the existing soil and the addition of the appropriate amount of cement, CC100 and water to create a uniform mixture. This mixture is then compacted using heavy equipment to achieve the desired strength and density. The final product is used as a part of flexible pavement – bituminous wearing or as base for a rigid pavement that can support heavy loads.
- Improved strength and durability: The CC100 admixture along with cement binding in the mixture creates a stronger, more durable layer that can withstand heavy loads and resist damage from weather and environmental factors. Cementitious base layer is practically impervious. It resists cyclic freezing, rain, and rain-weather damage.
- CReduced maintenance: The stabilized layer requires less maintenance than untreated soil or aggregate, reducing the need for costly repairs and minimizing disruption to traffic flow.
- Faster construction: The use of a CTB/CTS layer can speed up construction time, as the layer can be constructed more quickly and efficiently than untreated materials.
- Cost-effective: CTB/CTS layers can be more cost-effective than traditional pavement structures since they use locally sourced materials and require fewer material inputs.
We design and construct the flexible pavement and rigid pavement using CTB & CTS as per the Indian Road Congress guidelines and Ministry of Road Transport & Highways.
